Outdoor lamp



FIG. 1 is a perspective view of my new design;

FIG. 2 is a right-side elevational view of the new design, the left side being a mirror image thereof;

FIG. 3 is a top plan view of the new design;

FIG. 4 is a front elevational view of the new design;

FIG. 5 is a bottom plan view of the new design; and,

FIG. 6 is a rear elevational view of the new design.

The broken line are shown for illustrative purposes only and form no part of the claimed design. 

The ornamental design for an outdoor lamp, as shown and described. 